Im guessing all the ex-Military people do. But I was bored today and I was wandering about rappeling so I just taught myself today (ok google did). I bought som rope from walmart (not expensive but it had a high enough strength rating) Then I bought a carbiner from Sportsman Warehouse. I made myself a swiss seat. Then attached the carbiner and had at it. I started out 17 ft off the ground (using a fireladder out my window to start from) I started out going way too fast so then after a few tries I wrapped the rope aroudnd the inside of the carbiner once and it slwoed my speed down in half. I eventualy worked my way up to the top and I rappeled out a 15 foot window. All for under 25$ Rope (346lb from walmart) $14 Gloves $1 (Dollar tree) Carbiner $6 Tommorow im going to try it from a 25 foot window.